diff --git a/.firefox.metadata b/.firefox.metadata
index 0e0ff5e..9b00213 100644
--- a/.firefox.metadata
+++ b/.firefox.metadata
@@ -1,6 +1,7 @@
 5012b69e54cbebe3b5e74011dacf3a2097f49921 SOURCES/cbindgen-vendor.tar.xz
-febc288cf9cfecc9755fc1dac8a4680244a47366 SOURCES/firefox-128.3.0esr.processed-source.tar.xz
-ce0c755853b8201b92e4e29af83a82a6a61e07a5 SOURCES/firefox-langpacks-128.3.0esr-20240924.tar.xz
+6816817f0b3b42a13dfdc38af8c61dca46b54c13 SOURCES/firefox-128.3.1esr.processed-source.tar.xz
+4641ad07664f375780e20200322bd5b45cd60ee8 SOURCES/firefox-langpacks-128.3.1esr-20241009.tar.xz
 2d8a6b2b30d5496735f49ffe8c8a7ede3a78a5ca SOURCES/mochitest-python.tar.gz
 d744f92e874688cc4b5376477dfdd639a97a6cd4 SOURCES/nspr-4.35.0-1.el8_1.src.rpm
+f466d7213e85773e002c48897524eaf909480046 SOURCES/nss-3.101.0-7.el8_2.src.rpm
 0413d22a58ba1bba99acec9c3c2a4db56a4100c7 SOURCES/nss-3.101.0-7.el9_2.src.rpm
diff --git a/.gitignore b/.gitignore
index c1e7719..2e76375 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 SOURCES/cbindgen-vendor.tar.xz
-SOURCES/firefox-128.3.0esr.processed-source.tar.xz
-SOURCES/firefox-langpacks-128.3.0esr-20240924.tar.xz
+SOURCES/firefox-128.3.1esr.processed-source.tar.xz
+SOURCES/firefox-langpacks-128.3.1esr-20241009.tar.xz
 SOURCES/mochitest-python.tar.gz
 SOURCES/nspr-4.35.0-1.el8_1.src.rpm
+SOURCES/nss-3.101.0-7.el8_2.src.rpm
 SOURCES/nss-3.101.0-7.el9_2.src.rpm
diff --git a/SPECS/firefox.spec b/SPECS/firefox.spec
index 237a471..ec59d2e 100644
--- a/SPECS/firefox.spec
+++ b/SPECS/firefox.spec
@@ -137,8 +137,8 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        128.3.0
-Release:        1%{?dist}
+Version:        128.3.1
+Release:        2%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 
@@ -168,7 +168,7 @@ ExcludeArch:    aarch64 s390 ppc
 # Link to original tarball: https://archive.mozilla.org/pub/firefox/releases/%%{version}%%{?pre_version}/source/firefox-%%{version}%%{?pre_version}.source.tar.xz
 Source0:        firefox-%{version}%{?pre_version}%{?buildnum}.processed-source.tar.xz
 %if %{with langpacks}
-Source1:        firefox-langpacks-%{version}%{?pre_version}-20240924.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20241009.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -193,7 +193,7 @@ Source37:       mochitest-python.tar.gz
 # Bundled libraries
 Source401:      nss-setup-flags-env.inc
 Source402:      nspr-4.35.0-1.el8_1.src.rpm
-Source403:      nss-3.101.0-7.el9_2.src.rpm
+Source403:      nss-3.101.0-7.el8_2.src.rpm
 Source404:      nss-3.101.0-7.el9_2.src.rpm
 
 # ---- RHEL specific patches ---
@@ -1860,6 +1860,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Wed Oct 09 2024 Jan Horak <jhorak@redhat.com> - 128.3.1-1
+- Update to 128.3.1
+
 * Tue Sep 24 2024 Jan Horak <jhorak@redhat.com> - 128.3.0-1
 - Update to 128.3.0